<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        div{
            width: 200px;
            height: 200px;
            border: 1px solid red;
            text-align: center;
            line-height:200px;
        }
    </style>
</head>
<body>

<div>
    <span>
        xxxxx
    </span>

</div>

</body>
</html>